code: def test_init_after_state_tracking(self):
      class MyLayer(layers.Layer):
          def __init__(self):
              self.some_attr = True
              self.w = backend.Variable(np.random.random((2,)))
              super().__init__()
  
      layer = MyLayer()
      self.assertEqual(len(layer.weights), 1)
  
imports: import numpy
  import pytest
  from keras import backend
  from keras import layers
  from keras import metrics
  from keras import models
  from keras import ops
  from keras import testing
label_desc: Use image node_id 18 for calling the LayerTest obj's underlying member method code with example usage: obj.test_init_after_state_tracking() without return types